Surface Activity Profiling (SAP): A potential means of predicting intestinal membrane permeability

Area of Science:

• Pharmacokinetics and Drug Metabolism
• Biophysical Chemistry

Background:

• Early drug development requires assessing oral drug substance permeability through the intestinal mucosa.
• Traditional methods like animal studies and cell cultures are time-consuming and resource-intensive.

Purpose of the Study:

• To introduce Surface Activity Profiling (SAP) as a rapid screening method for predicting intestinal drug permeability.
• To evaluate SAP as an alternative to conventional animal and cell-based assays.

Main Methods:

• Utilized a multichannel tensiometer for Surface Activity Profiling (SAP).
• Required only 50 µl of stock solution for complete permeability analysis.
• Correlated SAP results with human absorption data for marketed drugs and rat absorption data for development compounds.

Main Results:

• Demonstrated strong correlation between SAP results and human/rat absorption data.
• Achieved excellent agreement in cross-laboratory results for marketed drugs.
• SAP proved effective for early-stage lead compound investigations with limited sample availability.

Conclusions:

• Surface Activity Profiling (SAP) is an effective and fast tool for predicting oral drug absorption.
• SAP serves as a viable alternative to animal studies and cell cultures for early drug permeability screening.
• The method is particularly useful for amphiphilic compounds in early drug development stages.